20-km distributed temperature sensor based on spontaneous Brillouin scattering |
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| Authors: | Lecoeuche V. Hathaway M.W. Webb D.J. Pannell C.N. Jackson D.A. |
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| Affiliation: | Appl. Opt. Group, Kent Univ., Canterbury, UK; |
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| Abstract: | ![]()
We report on a novel experimental setup for distributed measurement of temperature, based on spontaneous Brillouin scattering in optical fiber. We have developed a mode-locked Brillouin fiber ring laser in order to generate the dual frequency source required for a heterodyne detection of the backscattered signal. This relatively simple system enables temperature measurements over 20 km with a spatial resolution of 7 m. |
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